Ascomycetes on Myrica gale in Sweden

The Ascomycete flora on Myrica gale has been investigated, mainly on the basis of Swedish material. It is found to be largely host specific. Four Discomycetes and nine Pyrenomycetes s. lat. are recorded as true, ± exclusive Myrica fungi; ten plurivorous Pyrenomycetes have occasionally been met with. The mycoflora on Myrica gale seems to be of a rather recent origin, composed of fairly modern species. Six new names are published: Gibbera gemmarum sp. nov., G. minutissima sp. nov., Melanomma myricae sp. nov., Semisphaeria sigmundii gen. nov. et sp. nov., Stomiopeltis myricae sp. nov., and Trichopezizella myricae comb. nov.